schoo1bag = ['语文书','数学书','练习册','笔盒']
schoo1bag1 = schoo1bag
print(schoo1bag, schoo1bag1)
schoo1bag[0] = '英语书'
print(schoo1bag, schoo1bag1)

schoolbag = ['语文书','数学书','英语书','漫画书']
length = len(schoolbag)
i = 0
while i < length:
    print(schoolbag[i])
    i += 1

schoolbag = ['语文书','数学书','英语书','漫画书']
for item in schoolbag:
    print(item)

schoolbag = ['语文书','数学书','英语书','漫画书']
print(schoolbag)
workbook = ['语文练习册','数学练习册']
penbox = ['铅笔','油笔','橡皮']
schoolbag.extend(workbook)
print(schoolbag)
schoolbag.append(penbox)
print(schoolbag)

schoolbag = ['语文书','数学书','英语书','漫画书']
print(schoolbag)
schoolbag.pop(2)
print(schoolbag)
schoolbag.remove('漫画书')
print(schoolbag)